Windows Event ID 325 – System: Boot Configuration Data Store Corruption

Start by examining the current BCD configuration and checking for obvious corruption indicators.

1. Open Command Prompt as Administrator
2. Run the BCD enumeration command to display current configuration:

   bcdedit /enum all

3. Look for missing or malformed entries, especially the Windows Boot Manager and Boot Loader sections
4. Check Event Viewer for additional context:
   Event Viewer → Windows Logs → System
5. Filter for Event ID 325 and examine the event details for specific error codes
6. Use PowerShell to get detailed event information:

   Get-WinEvent -FilterHashtable @{LogName='System'; Id=325} -MaxEvents 5 | Format-List TimeCreated, Id, LevelDisplayName, Message

Use Windows built-in repair mechanisms to automatically fix common BCD corruption issues.

1. Boot from Windows installation media or recovery environment
2. Select Repair your computer → Troubleshoot → Advanced options
3. Choose Command Prompt and run automatic repair:

   bootrec /fixmbr
   bootrec /fixboot
   bootrec /rebuildbcd

4. If rebuildbcd fails, try the more comprehensive repair:

   bcdboot C:\Windows /s C: /f ALL

5. Restart the system and verify the repair by checking Event Viewer for new Event ID 325 occurrences
6. Run system file checker to address any related corruption:

   sfc /scannow
   Dism /Online /Cleanup-Image /RestoreHealth

When automatic repair fails, manually rebuild the BCD store from scratch while preserving system functionality.

1. Boot to Windows Recovery Environment and open Command Prompt
2. Back up the existing BCD store:

   bcdedit /export C:\BCD_Backup

3. Delete the corrupted BCD store:

   attrib -h -s -r C:\Boot\BCD
   del C:\Boot\BCD

4. Create a new BCD store:

   bcdedit /createstore C:\Boot\BCD

5. Create the Windows Boot Manager entry:

   bcdedit /create {bootmgr} /d "Windows Boot Manager"
   bcdedit /set {bootmgr} device partition=C:
   bcdedit /set {bootmgr} path \bootmgr

6. Create a new boot loader entry:

   bcdedit /create /d "Windows 11" /application osloader

7. Configure the new boot entry with system-specific settings:

   bcdedit /set {default} device partition=C:
   bcdedit /set {default} path \Windows\system32\winload.exe
   bcdedit /set {default} systemroot \Windows

8. Set the boot manager default and timeout:

   bcdedit /set {bootmgr} default {default}
   bcdedit /set {bootmgr} timeout 30

Address potential storage subsystem problems that may be causing recurring BCD corruption.

1. Run comprehensive disk error checking on the system partition:

   chkdsk C: /f /r /x

2. Use PowerShell to check disk health and identify bad sectors:

   Get-PhysicalDisk | Get-StorageReliabilityCounter
   Get-Disk | Get-DiskStorageNodeView

3. Examine system event logs for storage-related errors:

   Get-WinEvent -FilterHashtable @{LogName='System'; Id=7,11,51,98} -MaxEvents 20

4. Check the file system integrity of the boot partition:

   fsutil fsinfo ntfsinfo C:

5. If using SSDs, verify TRIM support and health:

   Get-PhysicalDisk | Where-Object {$_.MediaType -eq 'SSD'} | Get-StorageReliabilityCounter

6. Review system partition free space and defragmentation status:

   Get-Volume C | Select-Object DriveLetter, FileSystemLabel, Size, SizeRemaining

Perform deep system recovery when BCD corruption indicates broader system registry or boot process damage.

1. Boot to Windows PE or recovery environment with registry access
2. Load the system registry hive for inspection:

   reg load HKLM\OFFLINE C:\Windows\System32\config\SYSTEM

3. Examine boot-related registry keys for corruption:

   reg query "HKLM\OFFLINE\Select" /v Current
   reg query "HKLM\OFFLINE\Select" /v Default

4. Check the ControlSet registry structure:

   reg query "HKLM\OFFLINE\ControlSet001\Services\Disk"
   reg query "HKLM\OFFLINE\ControlSet001\Control\CriticalDeviceDatabase"

5. If registry corruption is detected, restore from RegBack:

   copy C:\Windows\System32\config\RegBack\SYSTEM C:\Windows\System32\config\SYSTEM

6. Unload the registry hive:

   reg unload HKLM\OFFLINE

7. Perform a complete system file restoration:

   Dism /Image:C:\ /Cleanup-Image /RestoreHealth /Source:wim:D:\sources\install.wim:1

8. Rebuild BCD after registry repair using Method 3 steps